I am trying to create an android application that requires a login/registration and I'm not getting any errors but it doesn't connect to the internet. I have a section that when the register button is pressed for the app to say "Checking network" but it just gets stuck on that and never moves on I don't know what seems to be the problem. I am a newbie to java so its probably something really simple and I thank you in advance for any help or tips given!
This here is my register.java
public class Register extends Activity { /** * JSON Response node names. **/ private static String KEY_Success = "Success"; private static String KEY_Client_ID = "Client_ID"; private static String KEY_Name = "Name"; private static String KEY_Email = "Email"; private static String KEY_Username = "Username"; private static String KEY_Password = "Password"; private static String KEY_ERROR = "error"; /** * Defining layout items. **/ EditText inputName; EditText inputUsername; EditText inputEmail; EditText inputPassword; Button btnRegister; TextView registerErrorMsg; /** * Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.register); /** * Defining all layout items **/ inputName = (EditText) findViewById(R.id.name); inputUsername = (EditText) findViewById(R.id.uname); inputEmail = (EditText) findViewById(R.id.email); inputPassword = (EditText) findViewById(R.id.pword); btnRegister = (Button) findViewById(R.id.register); registerErrorMsg = (TextView) findViewById(R.id.register_error); /** * Button which Switches back to the login screen on clicked **/ Button login = (Button) findViewById(R.id.bktologin); login.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent myIntent = new Intent(view.getContext(), Login.class); startActivityForResult(myIntent, 0); finish(); } }); /** * Register Button click event. * A Toast is set to alert when the fields are empty. * Another toast is set to alert Username must be 5 characters. **/ btnRegister.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if ( ( !inputUsername.getText().toString().equals("")) && ( !inputPassword.getText().toString().equals("")) && ( !inputName.getText().toString().equals("")) && ( !inputEmail.getText().toString().equals("")) ) { if ( inputUsername.getText().toString().length() > 4 ){ NetAsync(view); } else { Toast.makeText(getApplicationContext(), "Username should be minimum 5 characters", Toast.LENGTH_SHORT).show(); } } else { Toast.makeText(getApplicationContext(), "One or more fields are empty", Toast.LENGTH_SHORT).show(); } } }); } /** I THINK THE PROBLEM IS AROUND THIS AREA! * Async Task to check whether internet connection is working **/ private class NetCheck extends AsyncTask { private ProgressDialog nDialog; @Override protected Object doInBackground(Object[] params) { return null; } @Override protected void onPreExecute(){ super.onPreExecute(); nDialog = new ProgressDialog(Register.this); nDialog.setMessage("Loading, please be patient..."); nDialog.setTitle("Checking Network"); nDialog.setIndeterminate(false); nDialog.setCancelable(true); nDialog.show(); } protected Boolean doInBackground(String... args){ /** * Gets current device state and checks for working internet connection by trying Google. **/ ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netInfo = cm.getActiveNetworkInfo(); if (netInfo != null && netInfo.isConnected()) { try { URL url = new URL("http://www.google.com"); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setConnectTimeout(3000); urlConnection.connect(); if (urlConnection.getResponseCode() == 200) { return true; } } catch (MalformedURLException e1) { e1.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return false; } protected void onPostExecute(Boolean th){ if(th == true){ nDialog.dismiss(); new ProcessRegister().execute(); } else{ nDialog.dismiss(); registerErrorMsg.setText("Error in Network Connection"); } } } private class ProcessRegister extends AsyncTask { /** * Defining Process dialog **/ private ProgressDialog pDialog; String email,password,name,uname; @Override protected Object doInBackground(Object[] params) { return null; } @Override protected void onPreExecute() { super.onPreExecute(); inputUsername = (EditText) findViewById(R.id.uname); inputPassword = (EditText) findViewById(R.id.pword); name = inputName.getText().toString(); email = inputEmail.getText().toString(); uname= inputUsername.getText().toString(); password = inputPassword.getText().toString(); pDialog = new ProgressDialog(Register.this); pDialog.setTitle("Contacting Servers"); pDialog.setMessage("Registering ..."); pDialog.setIndeterminate(false); pDialog.setCancelable(true); pDialog.show(); } protected JSONObject doInBackground(String... args) { UserFunctions userFunction = new UserFunctions(); JSONObject json = userFunction.registerUser(name, email, uname, password); return json; } protected void onPostExecute(JSONObject json) { /** * Checks for success message. **/ try { if (json.getString(KEY_Success) != null) { registerErrorMsg.setText(""); String res = json.getString(KEY_Success); String red = json.getString(KEY_ERROR); if(Integer.parseInt(res) == 1){ pDialog.setTitle("Getting Data"); pDialog.setMessage("Loading Info"); registerErrorMsg.setText("Successfully Registered"); DatabaseHandler db = new DatabaseHandler(getApplicationContext()); JSONObject json_user = json.getJSONObject("user"); /** * Removes all the previous data in the SQlite database **/ UserFunctions logout = new UserFunctions(); logout.logoutUser(getApplicationContext()); db.addUser(json_user.getString(KEY_Name),json_user.getString(KEY_Email),json_user.getString(KEY_Username)); /** * Stores registered data in SQlite Database * Launch Registered screen **/ Intent registered = new Intent(getApplicationContext(), Registered.class); /** * Close all views before launching Registered screen **/ registered.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); pDialog.dismiss(); startActivity(registered); finish(); } else if (Integer.parseInt(red) ==2){ pDialog.dismiss(); registerErrorMsg.setText("User already exists"); } else if (Integer.parseInt(red) ==3){ pDialog.dismiss(); registerErrorMsg.setText("Invalid Email id"); } } else{ pDialog.dismiss(); registerErrorMsg.setText("Error occured in registration"); } } catch (JSONException e) { e.printStackTrace(); } }} public void NetAsync(View view){ new NetCheck().execute(); }} I have just noticed this though:
/** * The "doInBackground" is not being used" I don't know what that means. **/ protected Boolean doInBackground(String... args){ /** * Gets current device state and checks for working internet connection by trying Google. **/ ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netInfo = cm.getActiveNetworkInfo(); if (netInfo != null && netInfo.isConnected()) { try { URL url = new URL("http://www.google.com"); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setConnectTimeout(3000); urlConnection.connect(); if (urlConnection.getResponseCode() == 200) { return true; } } catch (MalformedURLException e1) { e1.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } return false; } /** * The "onPostExecute" is not being used" I don't know what that means. **/ protected void onPostExecute(Boolean th) { if(th == true){ nDialog.dismiss(); new ProcessRegister().execute(); } else{ nDialog.dismiss(); registerErrorMsg.setText("Error in Network Connection"); } } 
